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Java > Open Source Codes > org > eclipse > core > databinding > observable > set > SetDiff


1 /*******************************************************************************
2  * Copyright (c) 2006, 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11
12 package org.eclipse.core.databinding.observable.set;
13
14 import java.util.Set JavaDoc;
15
16 /**
17  * @since 1.0
18  *
19  */
20 public abstract class SetDiff {
21     
22     /**
23      * @return the set of added elements
24      */
25     public abstract Set JavaDoc getAdditions();
26     
27     /**
28      * @return the set of removed elements
29      */
30     public abstract Set JavaDoc getRemovals();
31     
32     /**
33      * @see java.lang.Object#toString()
34      */
35     public String JavaDoc toString() {
36         StringBuffer JavaDoc buffer = new StringBuffer JavaDoc();
37         buffer
38             .append(getClass().getName())
39             .append("{additions [") //$NON-NLS-1$
40 .append(getAdditions() != null ? getAdditions().toString() : "null") //$NON-NLS-1$
41 .append("], removals [") //$NON-NLS-1$
42 .append(getRemovals() != null ? getRemovals().toString() : "null") //$NON-NLS-1$
43 .append("]}"); //$NON-NLS-1$
44
45         return buffer.toString();
46     }
47 }
48
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